将除硬后的浓盐水经循环泵(MP-70RZ, 新西山)泵入采够自日本Astom公司生产的阳离子交换膜（CMB）、阴离子交换膜（ACM）以及双极膜（BP-1E）组装而成的双极膜电渗析中。各室储罐的体积为4L。在启动电源前稳定循环半小时以排除膜堆内的气泡。然后启动电源（ZJ-2100-70, 正杰）并调节电流为恒定，记录盐室电导率、产品酸液浓度、碱液浓度随批处理时间的变化，以及不同批次处理过程的能耗和电流效率的数据。进水浓盐水TDS为20g/L, 膜片面积510cm2，盐水流速130L/h，水温30℃，膜堆结构BM-AEM-CEM-BM。当盐室电导约为6 μS/cm时更换掉盐室浓盐水，共循环进水三次。测量精度取至小数点后两位。\n
当浓盐水在双极膜电渗析中经过三次循环后，盐室电导率从20g/L降至4g/L；产碱浓度为0.6mol/L; 产酸浓度为0.7mol/L。对应膜堆的能耗从0.88增加至1.87kWh/(kg NaOH)；电流效率从72%降低至65%。\n
本数据集主要应用于苦咸水淡化系统的浓盐水资源化利用研究。", "ds_source": "
实验获得。", "ds_process_way": "
电渗析膜片面积510 cm2，盐水流速130 L/h，水温30℃条件下实验测得。", "ds_quality": "
(1)数据生产过程: 将除硬后的浓盐水经循环泵(MP-70RZ, 新西山)泵入采够自日本Astom公司生产的阳离子交换膜（CMB）、阴离子交换膜（ACM）以及双极膜（BP-1E）组装而成的双极膜电渗析中。各室储罐的体积为4 L。在启动电源前稳定循环半小时以排除膜堆内的气泡。然后启动电源（ZJ-2100-70, 正杰）并调节电流为恒定，记录盐室电导率、产品酸液浓度、碱液浓度随批处理时间的变化，以及不同批次处理过程的能耗和电流效率的数据。\n
(2)方法: 进水浓盐水TDS为20 g/L, 膜片面积510 cm2，盐水流速130 L/h，水温30℃，膜堆结构BM-AEM-CEM-BM。当盐室电导约为6 μS/cm时更换掉盐室浓盐水，共循环进水三次。测量精度取至小数点后两位。\n
(3)结果：当浓盐水在双极膜电渗析中经过三次循环后，盐室电导率从20 g/L降至4 g/L； 产碱浓度为0.6 mol/L; 产酸浓度为0.7 mol/L。对应膜堆的能耗从0.88增加至1.87 kWh/(kg NaOH)； 电流效率从72%降低至65%。", "ds_acq_start_time": "2019-07-20 00:00:00", "ds_acq_end_time": "2020-10-30 00:00:00", "ds_acq_place": "天津市", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 212030, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "c43a4e8b-7895-4027-9802-75e3bb369cac.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "d6a6694f-4988-40e1-ac47-a19692c05b3d", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.5515" ], "quality_level": 3, "publish_time": "2021-10-22 15:27:23", "last_updated": "2025-05-29 17:27:22", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.MDBW.2021.11", "i18n": { "en": { "title": "Tianjin Jinhai Lake Water Desalination System Concentrated Brine Treatment Dataset (July 20, 2019 - October 30, 2020)", "ds_format": "excel", "ds_source": "
Experimentally obtained.", "ds_quality": "
(1)Data production process: The concentrated brine after hardness removal is pumped by a circulating pump (MP-70RZ, New Nishiyama) into a bipolar membrane electrodialysis assembled with cation-exchange membranes (CMB), anion-exchange membranes (ACM), and bipolar membranes (BP-1E), which are produced by Astom, Japan, with a volume of 4 L for each chamber. The volume of each chamber reservoir was 4 L. A steady cycle was performed for half an hour before starting the power supply to remove air bubbles from the membrane stack. Then the power supply (ZJ-2100-70, Zhengjie) was started and the current was adjusted to be constant, and the data on the changes of conductivity of the salt chamber, acid concentration of the product, and alkaline concentration with the batch processing time, as well as the data on the energy consumption and current efficiency of different batch processes were recorded.\n
(2) Methods: Inlet concentrated brine TDS is 20 g/L, membrane area 510 cm2, brine flow rate 130 L/h, water temperature 30 ℃, membrane stack structure BM-AEM-CEM-BM. When the salt chamber conductivity is about 6 μS/cm, the concentrated brine is replaced, and the inlet is recycled three times in total. The measurement accuracy was taken to two decimal places.\n
(3) Results: when the concentrated brine in the bipolar membrane electrodialysis after three cycles, the salt chamber conductivity decreased from 20 g/L to 4 g/L; the alkali production concentration was 0.6 mol/L; the acid production concentration was 0.7 mol/L. The energy consumption of the corresponding stack of membranes increased from 0.88 to 1.87 kWh/(kg NaOH); the current efficiency decreased from 72% to 65%.", "ds_ref_way": "", "ds_abstract": "
The concentrated brine after hardness removal is pumped into the bipolar membrane electrodialysis assembled with cation-exchange membrane (CMB), anion-exchange membrane (ACM), and bipolar membrane (BP-1E) from Astom in Japan through the circulating pump (MP-70RZ, New Xishan) with the volume of 4L for each chamber. The volume of each chamber tank was 4 L. A stable cycle was performed for half an hour before starting the power supply to remove air bubbles from the membrane stack. Then the power supply (ZJ-2100-70, Zhengjie) was started and the current was adjusted to be constant, and the data on the conductivity of the salt chamber, the concentration of the product acid solution, the concentration of the alkaline solution with the batch processing time, as well as the data on the energy consumption and the efficiency of the current of the different batch processing were recorded. The inlet concentrated brine TDS was 20 g/L, the membrane area was 510 cm2, the brine flow rate was 130 L/h, the water temperature was 30 ℃, and the membrane stack structure was BM-AEM-CEM-BM. The concentrated brine in the salt chamber was replaced when the conductivity of the salt chamber was about 6 μS/cm, and the inlet was recycled for three times in total. The measurement accuracy was taken to two decimal places.\n
When the concentrated brine was circulated three times in the bipolar membrane electrodialysis, the conductivity of the salt chamber was reduced from 20 g/L to 4 g/L; the alkali production concentration was 0.6 mol/L; and the acid production concentration was 0.7 mol/L. The energy consumption of the corresponding membrane stack was increased from 0.88 to 1.87 kWh/(kg NaOH); and the current efficiency was reduced from 72% to 65%.\n
This dataset is mainly applied to the study of concentrated brine resource utilization in brackish water desalination system.
", "ds_time_res": "", "ds_acq_place": "Tianjin City", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The area of electrodialysis diaphragm was 510 cm2, the flow rate of brine was 130 L/h, and the water temperature was measured experimentally at 30℃.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "双极膜电渗析", "浓盐水", "酸", "碱", "能耗", "电流效率" ], "ds_subject_tags": [ "水文化学" ], "ds_class_tags": [], "ds_locus_tags": [ "天津市" ], "ds_time_tags": [ 2020 ], "ds_contributors": [ { "true_name": "杜润红", "email": "durunhong@tiangong.edu.cn", "work_for": "天津工业大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "杜润红", "email": "durunhong@tiangong.edu.cn", "work_for": "天津工业大学", "country": "中国" } ], "ds_managers": [ { "true_name": "杜润红", "email": "durunhong@tiangong.edu.cn", "work_for": "天津工业大学", "country": "中国" } ], "category": "其他" }